UNITED STATES LIME & MINERALS INC - FORM 10-K - EX-32.1 - March 6, 2015

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EXCEL - IDEA: XBRL DOCUMENT - UNITED STATES LIME & MINERALS INCFinancial_Report.xls
10-K - 10-K - UNITED STATES LIME & MINERALS INCa2223416z10-k.htm
EX-23.2 - EX-23.2 - UNITED STATES LIME & MINERALS INCa2223416zex-23_2.htm
EX-21.1 - EX-21.1 - UNITED STATES LIME & MINERALS INCa2223416zex-21_1.htm
EX-31.2 - EX-31.2 - UNITED STATES LIME & MINERALS INCa2223416zex-31_2.htm
EX-32.2 - EX-32.2 - UNITED STATES LIME & MINERALS INCa2223416zex-32_2.htm
EX-23.1 - EX-23.1 - UNITED STATES LIME & MINERALS INCa2223416zex-23_1.htm
EX-95.1 - EX-95.1 - UNITED STATES LIME & MINERALS INCa2223416zex-95_1.htm
EX-99.1 - EX-99.1 - UNITED STATES LIME & MINERALS INCa2223416zex-99_1.htm
EX-31.1 - EX-31.1 - UNITED STATES LIME & MINERALS INCa2223416zex-31_1.htm

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EXHIBIT 32.1

SECTION 1350 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER

        I, Timothy W. Byrne, Chief Executive Officer of United States Lime & Minerals, Inc. (the "Company"), hereby certify that, to my knowledge:

    (1)
    The Company's Annual Report on Form 10-K for the year ended December 31, 2014 (the "Form 10-K") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

    (2)
    The information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: March 6, 2015   /s/ TIMOTHY W. BYRNE
 Timothy W. Byrne
 President and Chief Executive Officer



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SECTION 1350 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER

UNITED STATES LIME & MINERALS INC Reports